Butterfly Build Up

Session 36:

200/300 swim (choice)
  3 x 50 lateral side kick RI:15
  6 x 50 swim Fr @ 1:00 (M2 with fins)
  50 recovery

200/300 drill (IMO by 50/75)
  3 x 50 lateral side kick RI:15
  6 x 50 swim (M2 with fins)
  Odd: Fly @ 1:15
  Even: Fr @ 1:00
  50 recovery

200/300 pull (25Fr25Br) body only
  3 x 50 lateral side kick RI:15
  6 x 50 swim Fly @ 1:15 (M2 with fins)
  50 recovery